<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>2.特殊字符.html</title>
</head>
<body>
	
	<!-- 特殊字符 -->
	<br>
	&lt;br&gt;
	这是一&nbsp;&nbsp;&nbsp;&nbsp;个空格

	
</body>
</html>